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http://dx.doi.org/10.7745/KJSSF.2012.45.6.1194

Estimation of Paddy Field Area in North Korea Using RapidEye Images  

Hong, Suk Young (Soil and Fertilizer Management Division, National Academy of Agricultural Science (NAAS), Rural Development Administration)
Min, Byoung-Keol (B&T Solutions)
Lee, Jee-Min (B&T Solutions)
Kim, Yihyun (Soil and Fertilizer Management Division, National Academy of Agricultural Science (NAAS), Rural Development Administration)
Lee, Kyungdo (Soil and Fertilizer Management Division, National Academy of Agricultural Science (NAAS), Rural Development Administration)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.45, no.6, 2012 , pp. 1194-1202 More about this Journal
Abstract
Remotely sensed satellite images can be applied to monitor and obtain land surface information on inaccessible areas. We classified paddy field area in North Korea based on on-screen digitization with visual interpretation using 291 RapidEye satellite images covering the whole country. Criteria for paddy field classification based on RapidEye imagery acquired at different time of rice growth period was defined. Darker colored fields with regular shape in the images with false color composite from early May to late June were detected as rice fields. From early July to late September, it was hard to discriminate rice canopy from other type of vegetation including upland crops, grass, and forest in the image. Regular form of readjusted rice field in the plains and uniform texture when compared with surrounding vegetation. Paddy fields classified from RapidEye imagery were mapped and the areas were calculated by administrative district, province or city. Sixty six percent of paddy fields ($3,521km^2$) were distributed in the west coastal regions including Pyeongannam-do, Pyeonganbuk-do, and Hwanghaenam-do. The paddy field areas classified from RapidEye images showed less than 1% of difference from the paddy field areas of North Korea reported by FAO/WFP (Food and Agriculture Organization/World Food Programme).
Keywords
Paddy field; Classification; RapidEye; North Korea;
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